CN212033587U - Semiconductor refrigeration and dehumidification device for ring main unit - Google Patents
Semiconductor refrigeration and dehumidification device for ring main unit Download PDFInfo
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- CN212033587U CN212033587U CN202020976975.9U CN202020976975U CN212033587U CN 212033587 U CN212033587 U CN 212033587U CN 202020976975 U CN202020976975 U CN 202020976975U CN 212033587 U CN212033587 U CN 212033587U
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Abstract
Semiconductor refrigeration dehydrating unit for looped netowrk cabinet. Relate to supporting technical field of power equipment, especially relate to semiconductor refrigeration dehydrating unit for looped netowrk cabinet. The semiconductor refrigeration dehumidifying device is intelligent, free of frosting, convenient to power up in a cabinet, small in size, convenient to install and strong in instantaneity, and is realized through the microcontroller dehumidifying device. The hot end radiating fins penetrate through the back sun surface of the herringbone roof and extend out of the herringbone roof, radiating fans are arranged on the hot end radiating fins, cold end radiating fins are further arranged on the semiconductor refrigerator, and condensing fans are arranged on the cold end radiating fins. The utility model discloses utilized the information that the refrigerator controller feedback obtained, output signal heats the defrosting for semiconductor cooler refrigeration and resistance wire heater on the cold junction fin, and is intelligent, the frostless, and the photovoltaic power generation device who is equipped with has made things convenient for getting the electricity in the cabinet.
Description
Technical Field
The utility model relates to a supporting technical field of power equipment especially relates to semiconductor refrigeration dehydrating unit for looped netowrk cabinet.
Background
When cooling or air are moist, condensation is easy to generate in the ring main unit, accumulated water is generated in the ring main unit in serious conditions, the condition can lead to the reduction of the insulation resistance of the alternating current-direct current loop to the ground, the protection is refused to be operated or mistakenly operated if the resistance is light, short circuit is caused if the resistance is heavy, equipment is damaged, and the safe operation of a power grid is seriously threatened. The traditional dehumidification method is to install an electric heater in a cabinet to heat the interior of equipment, and reduce the relative humidity in the cabinet by improving the temperature in the cabinet, so that the method can play a role in removing dampness to a certain extent, but cannot fundamentally solve the problem of dampness; the anti-condensation device adopts a semiconductor refrigeration technology, reduces the relative humidity in the cabinet by locally manufacturing condensation conditions, and directly discharges condensed moisture.
For this reason, researchers in the field proposed "application research of novel semiconductor condensation dehumidifier in 10KV ring main unit", No. 1, power world, author in 2017: published research documents such as Chengshiping, Li Xiaozhou and Li Zhuan. This document provides a semiconductor condensation dehumidifier for solving the problem that outdoor looped netowrk cabinet frosted. But the key technology and difficulty of the current product are as follows: firstly, how to control the semiconductor refrigeration to discharge the moisture in the condensed air out of the cabinet and prevent the moisture from being condensed into frost; secondly, how to get electricity to the dehumidifier in the outdoor ring main unit; thirdly, how to make small, the power is little equipment to install in the looped netowrk cabinet.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to above problem, provide a semiconductor refrigeration dehydrating unit that intelligent, not frosting, the interior electricity of getting of cabinet that realize through microcontroller dehydrating unit are convenient, small, the installation of being convenient for, the real-time nature is strong.
The technical scheme of the utility model is that: a semiconductor refrigerator device and a refrigerator controller are arranged in the ring main unit, the semiconductor refrigerator device comprises a semiconductor refrigerator, a hot-end radiating fin, a cold-end radiating fin, a radiating fan, a condensing fan and a resistance wire heater, the refrigerator controller comprises an integrated temperature and humidity sensor, a keyboard circuit, a conditioning circuit, an Internet of things communication interface, a microcontroller and a frost sensor,
the frost sensor is fixedly connected to the cold-end cooling fin, the frost sensor adopts a CDC chip detection circuit, the CDC chip adopts a sigma-delta capacitance digital converter AD7746, and an output signal of the frost sensor is connected with the microcontroller through an I2C bus to realize the detection of frost condensation of a dehumidifier of the cold end of the semiconductor refrigerator;
the resistance wire heater is fixedly arranged on the cold-end radiating fin and is connected with the microcontroller through a resistance wire heater driving circuit, and an I/O port of the microcontroller outputs a control signal to drive the resistance wire wound on the cold-end radiating fin of the semiconductor refrigerator to generate heat.
The ring main unit is provided with a herringbone roof, the semiconductor refrigerator is arranged on the inner surface of the sunny side of the herringbone roof of the ring main unit,
the semiconductor cooler has a hot side heat sink and a cold side heat sink,
the hot end radiating fins penetrate through the back sun surface of the herringbone roof and extend out of the herringbone roof, the hot end radiating fins are provided with radiating fans,
the semiconductor refrigerator is also provided with a cold end radiating fin, and a condensing fan is arranged on the cold end radiating fin.
The solar photovoltaic power generation system is characterized in that a photovoltaic power generation device is arranged on the sunny side of the herringbone roof of the ring main unit, and the photovoltaic power generation device comprises a solar photovoltaic cell panel, a photovoltaic power generation DC/DC conversion device, a controller and an energy storage battery.
The ring main unit is also provided with an audible and visual alarm.
The utility model discloses semiconductor cooler device and refrigerator controller have been set up, at first through the inside temperature value of the looped netowrk cabinet of the integrated temperature and humidity sensor collection in the refrigerator controller, whether start the refrigeration of semiconductor cooler in application scope according to the temperature value, if take refrigeration measure after, the degree of frosting on the refrigerator cold junction fin is tested through the frost detection circuitry that is equipped with again, if the frost value reaches the defrosting rated value, then carry out the defrosting on the cold junction fin through the defrosting circuit that is equipped with inside, if the frost value does not reach the rated value, the integrated temperature and humidity sensor of rethread gathers the humidity value, whether start the refrigeration of semiconductor cooler in application scope according to the humidity value. Generally, the utility model discloses utilized the information that the refrigerator controller feedback obtained, output signal heats the defrosting for semiconductor cooler refrigeration and resistance wire heater on the cold junction fin, and is intelligent, not frosting, and the photovoltaic power generation device who is equipped with has made things convenient for getting the electricity in the cabinet.
Drawings
Figure 1 is a schematic view of the installation of a dehumidifying device on a ring main unit,
figure 2 is a block diagram of a control system of a semiconductor refrigeration and dehumidification device,
figure 3 is a flow chart of a semiconductor refrigeration dehumidification method,
FIG. 4 is a schematic diagram of a frost detection circuit of the semiconductor refrigeration and dehumidification device,
FIG. 5 is a schematic diagram of a heating and defrosting circuit of the semiconductor refrigeration dehumidifier;
in the figure, 1 is a semiconductor refrigerator, 2 is a cooling fan, 3 is a cold-end cooling fin, 4 is a condensing fan, 5 is a refrigerator controller, 6 is a solar photovoltaic cell panel, 7 is a photovoltaic power generation DC/DC conversion, controller and energy storage battery, 8 is an integrated temperature and humidity sensor, 9 is a microcontroller, 10 is a frost condensation sensor, 11 is a conditioning circuit, 12 is an audible and visual alarm, 13 is a resistance wire heater, 14 is a keyboard circuit, and 15 is an internet of things communication interface.
Detailed Description
The utility model is described in detail with reference to the attached drawings 1-5, a semiconductor refrigerator device and a refrigerator controller 5 are arranged in the ring main unit, the semiconductor refrigerator device comprises a semiconductor refrigerator 1, a hot end radiating fin, a cold end radiating fin 3, a radiating fan 2, a condensing fan 4 and a resistance wire heater 13, the refrigerator controller 5 comprises an integrated temperature and humidity sensor 8, a keyboard circuit 8, a conditioning circuit 11, an internet of things communication interface 15, a microcontroller 9 and a frost sensor 10,
as shown in fig. 2, the integrated temperature and humidity sensor 8 is connected with the microcontroller 9 to realize the collection of the temperature and the humidity in the ring main unit, the internet of things communication interface 15 is connected with the microcontroller 9 to realize the communication of various internet of things interfaces, the keyboard circuit 8 is connected with the microcontroller 9 to realize the system reset and the setting of the upper and lower temperature and humidity limit values.
The frost sensor 10 is fixedly connected to the cold-end cooling fin 3, the frost sensor 10 is connected with the microcontroller 9 through the conditioning circuit 11, as shown in fig. 4, the frost sensor 10 adopts a CDC chip detection circuit (the patent name is a capacitive refrigerator frost sensor detection circuit, the patent number is zl201721137639. x), the CDC chip adopts a sigma-delta capacitance digital converter AD7746, and the output signal of the frost sensor 10 is connected with the microcontroller 9 through an I2C bus, so that the frost of the cold-end dehumidifier of the semiconductor refrigerator 1 is detected;
the resistance wire heater 13 is fixedly arranged on the cold-end radiating fin 3, the resistance wire heater 13 is connected with the microcontroller 9 through a resistance wire heater driving circuit, an I/O port of the microcontroller 9 outputs a control signal to drive the resistance wire wound on the cold-end radiating fin 3 of the semiconductor refrigerator 1 to generate heat, and the defrosting function of frost condensation on the cold-end radiating fin of the semiconductor refrigerator is realized, and the circuit principle is shown in figure 5.
The ring main unit is provided with a herringbone roof, the semiconductor refrigerator 1 is arranged on the inner surface of the herringbone roof of the ring main unit,
the semiconductor cooler 1 has a hot side heat sink and a cold side heat sink 3,
the hot end radiating fin penetrates through the back sun surface of the herringbone roof and extends out of the herringbone roof, the radiating fan 2 is arranged on the hot end radiating fin, and the microcontroller 9 outputs signals to drive the radiating fan 2 through the driving circuit so as to realize hot end radiating treatment of the semiconductor refrigerator.
Semiconductor cooler 1 still is equipped with cold junction fin 3, is equipped with condensing fan 4 on the cold junction fin 3, and microcontroller 9 output signal passes through drive circuit drive condensing fan 4, realizes the dehumidification of semiconductor cooler 1's cold junction fin 3 and handles.
A photovoltaic power generation device is arranged on the sunny side of the herringbone roof of the ring main unit, and the photovoltaic power generation device comprises a solar photovoltaic cell panel 6, a photovoltaic power generation DC/DC conversion device, a controller and an energy storage battery 7. The power supply function to the internal circuit is realized.
The ring main unit is further provided with an audible and visual alarm 12, when the temperature and humidity value collected by the integrated temperature and humidity sensor 8 exceeds the limit range, the information is output to the audible and visual alarm 12 through the microcontroller 9 to give an alarm, and the function of alarming the temperature and humidity value of the ring main unit when the temperature and humidity value exceeds the limit range is achieved.
The semiconductor refrigeration dehumidification method for the ring main unit comprises the following steps of:
1) initializing the system;
2) collecting a temperature value inside the ring main unit;
3) judging whether the acquired temperature value is higher than 50 ℃ or lower than 0 ℃, stopping refrigeration if the temperature value is higher than 50 ℃ or lower than 0 ℃, giving out temperature line-crossing acousto-optic alarm, and returning to the step 2);
4) collecting a frost forming value output by a frost forming sensor if the temperature value is between 50 ℃ and 0 ℃;
5) judging whether the frost value is less than 1, if so, starting a resistance wire to heat and defrost, and returning to the step 2);
6) if the humidity value is not less than 1, acquiring the humidity value output by the humidity sensor;
7) if the humidity value is larger than 75%, starting the semiconductor refrigerator, and returning to the step 2);
8) if the humidity value is not more than 75%, judging whether the humidity value is less than 25%; if less than 25%, the semiconductor refrigerator is stopped, and the step 2) is returned, and if not less than 25%, the step 6) is returned.
Claims (4)
1. The semiconductor refrigeration and dehumidification device for the ring main unit is internally provided with a semiconductor refrigerator device and a refrigerator controller, the semiconductor refrigerator device comprises a semiconductor refrigerator, a hot end radiating fin, a cold end radiating fin, a radiating fan, a condensing fan and a resistance wire heater, the refrigerator controller comprises an integrated temperature and humidity sensor, a keyboard circuit, a conditioning circuit, an Internet of things communication interface, a microcontroller and a frost condensation sensor, and is characterized in that,
the frost sensor is fixedly connected to the cold-end cooling fin, the frost sensor adopts a CDC chip detection circuit, the CDC chip adopts a sigma-delta capacitance digital converter AD7746, and an output signal of the frost sensor is connected with the microcontroller through an I2C bus to realize the detection of frost condensation of a dehumidifier of the cold end of the semiconductor refrigerator;
the resistance wire heater is fixedly arranged on the cold-end radiating fin and is connected with the microcontroller through a resistance wire heater driving circuit, and an I/O port of the microcontroller outputs a control signal to drive the resistance wire wound on the cold-end radiating fin of the semiconductor refrigerator to generate heat.
2. The semiconductor refrigerating and dehumidifying device for ring main unit as claimed in claim 1, wherein the ring main unit has a gable roof, the semiconductor refrigerator is mounted on an inner surface of a sunny side of the gable roof of the ring main unit,
the semiconductor cooler has a hot side heat sink and a cold side heat sink,
the hot end radiating fins penetrate through the back sun surface of the herringbone roof and extend out of the herringbone roof, the hot end radiating fins are provided with radiating fans,
the semiconductor refrigerator is also provided with a cold end radiating fin, and a condensing fan is arranged on the cold end radiating fin.
3. The semiconductor refrigerating and dehumidifying device for ring main unit as claimed in claim 2, wherein a photovoltaic power generation device is disposed on a sunny side of a gable roof of the ring main unit, and the photovoltaic power generation device comprises a solar photovoltaic cell panel, a photovoltaic power generation DC/DC conversion device, a controller and an energy storage battery.
4. The semiconductor refrigerating and dehumidifying device for a ring main unit as claimed in claim 1, wherein the ring main unit is further provided with an audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020976975.9U CN212033587U (en) | 2020-06-01 | 2020-06-01 | Semiconductor refrigeration and dehumidification device for ring main unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020976975.9U CN212033587U (en) | 2020-06-01 | 2020-06-01 | Semiconductor refrigeration and dehumidification device for ring main unit |
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| CN212033587U true CN212033587U (en) | 2020-11-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968362A (en) * | 2021-02-22 | 2021-06-15 | 淄博博一新能源科技发展有限公司 | Anti-icing mute condensation dehumidifier, ring main unit and use method of dehumidifier |
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2020
- 2020-06-01 CN CN202020976975.9U patent/CN212033587U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968362A (en) * | 2021-02-22 | 2021-06-15 | 淄博博一新能源科技发展有限公司 | Anti-icing mute condensation dehumidifier, ring main unit and use method of dehumidifier |
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